Plugin to autopost on facebook twitter and co ?

Hi, i'm searching a plugin that let user autopost their content to social network, i need a one click plugin.
All plugins i found need to create applications, on wordpress.com for example, you just need to click on connect button, and you can autopost to twitter and facebook.
Whare can i find this kind of plugin ?

It does a similar job of pushing your stuff automatically from anywhere to anywhere. They have a WP plugin as well: http://wordpress.org/extend/plugins/pingpressfm/ (the plugin hasn't been updated lately, but I tried it out and it works on 3.3.1. Have a look)

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